table of contents
| PCI_SET_POWER_STATE(9) | Hardware Interfaces | PCI_SET_POWER_STATE(9) |
NAME¶
pci_set_power_state - Set the power state of a PCI device
SYNOPSIS¶
int pci_set_power_state(struct pci_dev * dev, pci_power_t state);
ARGUMENTS¶
dev
PCI device to handle.
state
PCI power state (D0, D1, D2, D3hot) to put the device
into.
DESCRIPTION¶
Transition a device to a new power state, using the platform firmware and/or the device´s PCI PM registers.
RETURN VALUE¶
-EINVAL if the requested state is invalid. -EIO if device does not support PCI PM or its PM capabilities register has a wrong version, or device doesn´t support the requested state. 0 if device already is in the requested state. 0 if device´s power state has been successfully changed.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |